Suitable for
Projects that match this page decision
- Still-water fillers preparing a FAT measurement method
- Teams investigating repeatable or intermittent fill-level variation
- Buyers who can provide production-representative bottles and water
Quality evidence / fill-level diagnosis
Water Filling Level Checks and Acceptance
An uneven row of bottles does not establish the cause or the delivered quantity. Define what is measured, control the sample conditions and ask for repeatable evidence before accepting the filling result.
Answer first
Not necessarily. Internal bottle geometry affects the relationship between height and quantity. Check the required quantity using the agreed method as well as the visual-level criterion.
Turn a fill-level concern into a testable requirement
Define the result
Specify visible liquid height, delivered volume or net mass separately. Bottle geometry can change apparent height. Record the approved measuring equipment, bottle reference and observation point; a photograph alone cannot verify quantity.
Create a comparable sample
Use identified bottle lots and one format. Record time, machine position where traceable, speed, product-water condition and whether the run was steady or restarting. Keep the measurement method and sampling point constant.
Describe the pattern
Separate a repeatable position pattern, scattered bottle differences and start/stop observations. These guide the supplier's investigation; they do not prove a failed valve. Preserve the original readings before any authorized adjustment.
Agree acceptance and retest
Write the sample plan, target, allowable variation, reject treatment and retest conditions into the technical agreement. Retest corrections under the same documented basis. Send observations and open questions with your machine enquiry.
Check the measurement basis before comparing readings
If net mass is used, document the agreed tare method and whether the bottle, cap and other packaging are included in each reading. A change in empty-container mass must not silently become a change in reported water content. If mass is converted to volume, record the agreed density and temperature basis rather than assuming that grams and millilitres are interchangeable. Identify the instrument, its suitability for the agreed limit and the check status. These are fields for a reviewed test method, not a calibration procedure or a declared net-content compliance result.
Keep failed evidence and define the next comparison
Keep the original sample IDs, individual readings and run conditions when a result fails or remains inconclusive. Name the open question, the authorized reviewer, the proposed correction and what will be held constant for the retest. Do not delete low readings, pool restart samples with steady production or present only an average that hides individual results. Compare the new run with the original on the same documented basis and obtain a recorded disposition. If the measurement method or bottle lot changed, explain the change instead of calling the result a direct before-and-after proof.
Not suitable for
Boundaries that need a different platform or review
- Applying an arbitrary universal fill-level tolerance
- Changing multiple machine settings before recording the symptom
- Using mixed bottle revisions in one diagnostic sample
Inputs required
Evidence to provide before confirmation
- Bottle and cap lot or sample identifiers
- Product-water supply state and machine running condition
- Speed, time, station or valve position and observed pattern
- Project-approved measurement method and acceptance basis
Machine function
What happens at this machine or decision boundary
- Describe the variation before attempting a correction.
- Separate bottle geometry, supply, station and transfer influences.
- Create evidence that can be repeated during FAT or troubleshooting.
Configuration decisions
Options that must appear in the proposal
- Visual reference, fill height or another approved measure
- Sample frequency and positions across the machine
- Conditions that must remain constant during comparison
Interface requirements
Upstream, downstream and utility handovers
- Product-water supply stability at the filler boundary
- Bottle geometry and transfer condition before filling
- Outfeed observations before downstream handling masks the symptom
Buyer risks
Questions to close before order
- Comparing samples taken under different conditions
- Treating bottle geometry variation as a filler fault
- Publishing an unverified tolerance as a machine guarantee
FAT checks
How to verify the agreed basis
- Approve the sample identity and measurement method before the run.
- Record time, position, result and any machine stop for each sample set.
- Retest open points under the same documented conditions.
Quotation scope
What the commercial offer should state
- Measurement method and buyer acceptance limit
- Bottle and water conditions for the test
- Sampling record and responsibility
- Open-point, correction and retest procedure
Questions to settle before requesting a quote
Does equal liquid height mean equal water volume?
Not necessarily. Internal bottle geometry affects the relationship between height and quantity. Check the required quantity using the agreed method as well as the visual-level criterion.
What fill-level tolerance should I specify?
Agree a project-specific target, measurement method, sampling plan and acceptance limit with the supplier. A catalog image or an unexplained accuracy percentage cannot establish that limit.
How should low bottles after a restart be recorded?
Identify them as restart samples and record stop duration and operating conditions. Compare them with steady-running samples separately and agree rejection and restart acceptance rules before testing.
Related decision
Selection Tools
Calculate preliminary required BPH from daily saleable bottles, net hours, planning efficiency and growth reserve, then compare an XGF reference band.
Allot Tech / filling-level-consistency
Turn this decision into a comparable machine scope
Send the bottle, cap, reference output, existing equipment and destination. Final values are confirmed in the project proposal.
Mr Kcal
Allot Tech (Suzhou) Co., Ltd.